Tornado Tempest Side Broom Screw M4 x 10 K73044830

The Tornado Tempest side broom screw M4 x 10 (part# K73044830) secures the drive disc (part# K56250410) to the side broom motor shaft. Tacony lists it as Screw M 4×10, Side Broom.

The Tempest’s side broom assembly is the part of the machine that reaches where the main brushroll cannot — into wall angles, along skirting and under fixtures. This small screw carries the entire drive torque between motor and brush. It is also the fastener most likely to be disturbed, because it has to come out whenever the drive disc is changed — and a drive disc gets changed more often than most people expect, since it wears from repeated brush fitting.

A screw that has been in and out several times, in an environment full of carpet grit, is a reasonable candidate for renewal on sight. It costs almost nothing, and the failure mode — a drive disc coming loose on a spinning shaft — is not a quiet one.

Compatible Models for the Side Broom Screw M4 x 10

• Tornado Tempest Wide-Area Cordless Carpet Vacuum Sweeper — Model TV400-W26-U

When to replace it

• The thread is stripped, crossed or galled.
• The drive recess is rounded out.
• The screw has worked loose in service.
• It has corroded onto the motor shaft.
• The drive disc is being replaced — fit a fresh screw with it.

Fitting notes

Remove the battery pack before starting. Check the motor shaft for damage while the screw is out. Tighten firmly — this joint transmits drive torque and a screw left light will work loose. Turn the drive disc by hand afterwards and confirm it is solid on the shaft with no rotational play before fitting a brush.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Browse the full Tornado Tempest parts range, or see the Tornado Tempest TV400-W26-U machine. Manufacturer information is at tornadovac.com.

Frequently Asked Questions

What does this screw do on the Tornado Tempest?

It secures the drive disc to the side broom motor shaft, carrying the drive torque between the motor and the brush.

How do I know if it needs replacing?

If the thread is stripped or crossed, the drive recess is rounded, it has worked loose in service, or it has corroded onto the shaft. Renew it whenever the drive disc is replaced.

What models is this screw (part# K73044830) compatible with?

The Tornado Tempest TV400-W26-U wide-area cordless carpet sweeper. PartSmart lists it against the Tempest alone.

How tight should it be?

Firm. This joint transmits the full drive torque to the brush, and a screw left light will work loose — at which point the drive disc is turning on a spinning shaft.

How do I order the side broom screw (part# K73044830) or get help?

You can add the side broom screw (part# K73044830) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.